For dressing: add all the dressing ingredients together mix it well making sure sugar is dissolved. Set aside. * To make ginger juice shred the ginger using fine shredder or zester, and squeeze the juice with fingers.
Boil the water in a saucepan over medium high heat with oil and salt. Add couscous mix it, cover the pan and turn off the heat. Couscous should be ready in about 5-6 minutes, fluff couscous with a fork. Set aside.
Toss spinach, arugula, couscous, pecans, and grapes together pour the dressing over and toss, sprinkle the feta cheese.